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Data as of Nov 9, 2026

81.17.242.0/24

No anonymizer space · no proxy exits in 30 days

Blacknight Internet Solutions Limited

Announcement
this exact prefix
RPKI valid
Announced by
AS39122
Type
Hosting
Risk
50 / 100 · Medium

Announcements

Less specific

Covering announcements

PrefixOriginTypeHolderRPKI
81.17.240.0/20
since Aug 2016
AS39122HostingBlacknight Internet Solutions Limited

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
81.17.240.0/204,096IE-BLACKNIGHT-20051216Blacknight Internet Solutions Limited (ORG-BISL2-RIPE) · IEALLOCATED PADec 16, 2005abuse@blacknight.ie
└ 81.17.242.0/2816BLACKNIGHT-INFRAunknownASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.24/298MNEYLON-NETMNeylon NetworkASSIGNED PASep 11, 2006abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.32/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PASep 13, 2006abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.40/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.48/298BLACKNIGHT-BROADBANDunknownASSIGNED PADec 5, 2006abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.64/2816CUST-INFRACustomer assigned /28 for network infrastructureASSIGNED PAMay 12, 2006abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.80/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAFeb 13, 2009abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.88/298BLACKNIGHT-INFRAunknownASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.96/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.104/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAJun 24, 2008abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.112/2816BLACKNIGHT-INFRAunknownASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.128/2732EFENCE-NETCustomer assigned /27ASSIGNED PAJan 25, 2007abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.160/2816AvastunknownSUB-ALLOCATED PAJun 29, 2021vpn-abuse@avast.com
└ 81.17.242.160/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAAug 9, 2007vpn-abuse@avast.com
└ 81.17.242.168/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAJul 30, 2018vpn-abuse@avast.com
via Avast
└ 81.17.242.176/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PASep 13, 2007abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.184/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.192/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.200/298CUST-INFRACustomer assigned /29 for network infrastructureASSIGNED PAMay 22, 2007abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.208/2816CUST-INFRACustomer assigned /28 for network infrastructureASSIGNED PAJul 11, 2007abuse@blacknight.ie
via IE-BLACKNIGHT-20051216
└ 81.17.242.248/298CUST-INFRAunknownASSIGNED PAJul 30, 2018abuse@blacknight.ie
via IE-BLACKNIGHT-20051216

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS39122

IE
Name
Blacknight Internet Solutions Limited
Type
Hosting
Registered
Dec 16, 2005
Domain
blacknight.com
Website
www.blacknight.com
Industry
Hosting and Cloud Provider
Spamhaus ASN-DROP
not listed